A118525 Start with 1 and repeatedly reverse the digits and add 6 to get the next term.

1, 7, 13, 37, 79, 103, 307, 709, 913, 325, 529, 931, 145, 547, 751, 163, 367, 769, 973, 385, 589, 991, 205, 508, 811, 124, 427, 730, 43, 40, 10, 7, 13, 37, 79, 103, 307, 709, 913, 325, 529, 931, 145, 547, 751, 163, 367, 769, 973, 385, 589, 991

Offset

1,2

Comments

After the initial term, the sequence enters the cycle (7, 13, 37, ..., 10) of length 30.

Links

Table of n, a(n) for n=1..52.

N. J. A. Sloane and others, Sequences of RADD type, OEIS wiki.

Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1).

Formula

a(n) = a((n-2 mod 30)+2) for all n>1. - M. F. Hasler, May 22 2014

Mathematica

NestList[FromDigits[Reverse[IntegerDigits[#]]]+6&, 1, 60]  (* Harvey P. Dale, Apr 22 2011 *)

Prog

(PARI) a(n, s=1)={n>1&&for(i=0, (n-2)%30, s=R(s)+6); s} \\ R =  A004086. - M. F. Hasler, May 22 2014

Crossrefs

Cf. A117828, A117816, A117817.

Sequence in context: A281317 A336773 A118819 * A213537 A094069 A338812

Adjacent sequences: A118522 A118523 A118524 * A118526 A118527 A118528

Keyword

nonn,base

Author

N. J. A. Sloane, May 06 2006

Status

approved